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Semtech Corporation SC3BA05
- Part No.:
- SC3BA05
- Manufacturer:
- Semtech Corporation
- Category:
- Bridge Rectifiers
- Package:
- 5-Rectangle
- Datasheet:
-
SC3BA05.pdf
- Description:
- BRIDGE RECT 3PHASE 50V 6A
- Quantity:
- Payment:
- Shipping:
Inventory:5,526
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Product details
Overview
SC3BA05 from Semtech is a transient diverting suppressor designed for high-energy EOS protection of 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A (8/20μs) peak pulse current handling, and a stable 27.5–28V clamping voltage across temperature and current range-used in USB Type-C PD input protection and industrial load switch inputs.
For engineers reviewing the SC3BA05 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under surge, low dynamic resistance (20mΩ), junction capacitance (175pF at 22V), thermal robustness (−40°C to +125°C), and DFN 1.6×1.6mm 6-lead package compatibility with high-density PCB layouts.
Technical Context
The SC3BA05 uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under increasing surge current.
It operates with reverse stand-off voltage of 22V, breakdown voltage of 25–27.9V, and exhibits <600nA leakage at VRWM. Its dynamic resistance is guaranteed at 20mΩ (measured 1A–40A, 8/20μs), enabling predictable voltage limiting during multi-kA transients without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage before activation |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave) - ensures protected ICs remain below damage threshold |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimal voltage rise under surge |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for 20V power rail protection without signal integrity impact |
| Operating Temperature | −40°C to +125°C - supports operation in harsh industrial and automotive under-hood environments |
Pinout & Package
SC3BA05 is housed in a Pb-free, RoHS-compliant DFN package measuring 1.6mm × 1.6mm × 0.55mm with exposed thermal pad (no internal thermal pad required; energy dissipated in silicon). All six terminals are surface-mount; pins 1–3 are GND, pins 4–6 are IN - all must be connected in parallel for full 40A rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; multiple pins reduce parasitic inductance |
| 4, 5, 6 | IN | Protected line input; parallel connection required to achieve rated 40A surge capability |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage | 27.5–28V across 24A–40A and −40°C to +125°C - eliminates derating uncertainty in thermal design |
| Surge-rated FET architecture | Replaces PN-junction TVS with active shunt switching - avoids voltage rise proportional to IPP × RDYN |
| Low dynamic resistance | 20mΩ guarantees minimal IR drop during surge - critical for protecting low-voltage-tolerance controllers |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against repetitive fast transients in motor drives and PLCs |
| UL 94V-0 molding compound | Ensures flame-retardant reliability in enclosed industrial enclosures and power supplies |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting VBUS lines in USB-C ports supporting up to 20V/5A PD negotiation against lightning-induced surges and connector hot-plug ESD. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed between connector and PD controller or load switch input. Use Value: Maintains clamping at ≤28V across temperature and current - prevents overvoltage damage to sensitive PD controllers rated for 24V absolute max. | Use Scenario: Safeguarding enable and input pins of industrial-grade e-fuses (e.g., HS2950P) in remote meters, robotics, and factory automation systems. IC Role / Device Role / Timing Role: Front-end transient diverter that routes surge energy away from the load switch's internal FET gate oxide. Use Value: Limits voltage stress on the load switch's input stage to <28V - avoids gate oxide rupture and ensures reliable OVP/UVLO functionality during surge events. |
| IoT Edge Node Power Bus Protection | Storage Device 22V Rail Protection |
Use Scenario: Securing 22V auxiliary rails in battery-backed IoT gateways exposed to outdoor ESD and induced surges via long sensor cables. IC Role / Device Role / Timing Role: Single-device solution for EOS suppression on always-on power inputs feeding PMICs or MCU power domains. Use Value: Delivers 40A surge handling in 1.6×1.6mm footprint - saves >60% board area vs. discrete TVS+MOV alternatives while maintaining low leakage (<600nA). | Use Scenario: Protecting 22V backup power inputs in NVMe SSD modules and enterprise storage controllers subjected to system-level ESD and hot-swap transients. IC Role / Device Role / Timing Role: Standoff protector on auxiliary VCC rail supplying flash memory power management circuits. Use Value: 175pF capacitance avoids signal distortion on adjacent high-speed traces - enables co-location with PCIe lanes without impedance disruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Same device - SC3BA05 is Semtech's alternate orderable part number for TDS2211P per official ordering documentation | Identical functional, electrical, and mechanical specification; same DFN 1.6×1.6mm 6-lead package and pinout | No redesign needed; direct material substitution with identical BOM line item mapping |
| uClamp2411ZA | 24V working voltage, lower 24A IPP rating, higher 33V clamping, smaller 0.65×0.65mm 2-pin package | Targeted for CC/SBU lines in USB-C, not main VBUS; unsuitable for 40A surge or 22V power rail protection | Select only for low-capacitance, low-current signal-line protection - not a functional replacement for SC3BA05 |
Compared with TDS2211P (identical device) and uClamp2411ZA (lower-power signal-line variant), SC3BA05 delivers verified 40A surge capability and stable 28V clamping essential for 22V power bus protection - making it the sole suitable choice for VBUS, load switch input, and industrial 22V rail applications requiring IEC 61000-4-5 compliance.
Availability
SC3BA05 is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge node power buses requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for SC3BA05 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Semtech Corporation is a U.S.-based fabless semiconductor company specializing in analog and mixed-signal ICs for precision sensing, protection, and connectivity.
The SC3BA05 belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V power rail protection where stable clamping, temperature independence, and high surge current are mandatory.
FAQ
What is the exact package type and dimensions of SC3BA05?
SC3BA05 uses a DFN package measuring 1.6mm × 1.6mm × 0.55mm with 6 leads. Pins 1–3 are GND; pins 4–6 are IN. The package is Pb-free, halogen-free, RoHS/WEEE compliant, and carries UL 94V-0 flammability rating. No thermal pad is required beneath the die - energy is dissipated within the silicon FET structure.
Does SC3BA05 require external bias or control signals to operate?
No, SC3BA05 is fully passive and self-triggering. It contains an integrated precision trigger circuit and surge-rated FET - no external power, enable pin, or configuration is needed. Activation occurs automatically when transient voltage exceeds ~25V, turning on the shunt path to ground without delay or latency.
How does SC3BA05 differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak current (VC = VBR + IPP × RDYN), SC3BA05 maintains near-constant clamping (27.5–28V) from 24A to 40A due to its FET-based architecture and decreasing RDS(on). This eliminates thermal derating uncertainty and ensures predictable protection across temperature and surge magnitude.
Can SC3BA05 be used on data lines such as USB SuperSpeed or PCIe?
No - SC3BA05's 175pF junction capacitance is too high for high-speed data lines (which require <0.5pF). It is intended exclusively for 22V power or low-speed I/O lines. For USB SS/PCIe lanes, Semtech recommends RClamp3371ZC (0.18pF) or similar ultra-low-capacitance TVS devices instead of SC3BA05.
Is SC3BA05 suitable for automotive applications?
SC3BA05 operates from −40°C to +125°C and meets IEC 61000-4-2/4-4/4-5, but it is not AEC-Q200 qualified. It may be used in non-safety-critical automotive subsystems (e.g., infotainment power rails) where customer qualification is performed - however, for ASIL-B/C systems, AEC-Q200-qualified alternatives must be selected instead of SC3BA05.
SC3BA05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 5-Rectangle
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Diode Type:
- Three Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 50 V
- Current - Average Rectified (Io):
- 6 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 3 A
- Current - Reverse Leakage @ Vr:
- 3 µA @ 50 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- QC Terminal
- Supplier Device Package:
- -
SC3BA05 FAQ
1.How can I place an order for SC3BA05 through Aetrix?
Please submit a Request for Quotation (RFQ) for SC3BA05 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SC3BA05 reliable?
The price and inventory of SC3BA05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC3BA05 is usually 5 days.
3.What payment methods are accepted for SC3BA05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC3BA05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC3BA05?
SC3BA05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC3BA05 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SC3BA05?
For technical support, including SC3BA05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC3BA05 requirements.
6.How does Aetrix verify that SC3BA05 is sourced from the original manufacturer or authorized distributors?
All SC3BA05 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SC3BA05 meets industry standards.
7.What is the process for return or replacement of SC3BA05?
All SC3BA05 units undergo pre-shipment inspection (PSI). If there is an issue with SC3BA05, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SC3BA05 part is unused and in its original packaging.
Return procedure for SC3BA05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SC3BA05 Tags
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